Originally Posted by 10gaugemag
Any idea if most of the available uppers use a barrel with .308 or .310 bores?
I put an AR Stoner from Midway on a Stag lower and have loaded 308 bullets exclusively, it's been fine.
It's good with Prvi soft point ammo too.
Sorry, I've no idea if most US made barrels are 308 or 310.

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